From cuddy buddy to boo!

So I was talking with a few of my friends the other day and a very interesting discussion occured. One of my girls had been talking to this guy for about 2 years. When I say talking..they were basically friends with benefits...or should I say, cuddy buddies. They had been messing around for some time and it was clearly established at the beginning that he wasn't looking for a relationship. At the time when he stated this, my friend was pretty much in agreeance and felt the same way. Well, just as of two weeks ago he calls her and tells her that he has a girlfriend now. She said that this relationship had come out of nowhere because just a few days before he called her they had sex. She had noticed that as of late he had been acting different by not returning phone calls, coming by during strange hours, and he even put her on his limited profile on facebook (uh oh..lol). She knew that it was more than likely possible that he was talking to someone else, due to the arrangement of their relationship. They weren't "official" so technically he could talk to anyone he wanted to (I guess...lol). I asked her, "If you knew that he was talking to other people, then why is it so surprising that he has a girlfriend?" In summary, she was hurt because two years ago, when they first started sleeping together she remembers him telling her that he wasn't looking for a relationship. Over the two years, she claimed that his actions were saying the same....or at least the actions that he showed HER.
Here is the problem. Women, and some men, start sexual relationships with guys assuming that they are strong enough to handle being in a sex only relationship. Although you SAY you understand that he doesn't want a girlfriend....it hurts even more when you realize that he just doesn't want YOU as a girlfriend and that the only way that you will ever gratify him is sexually. When a relationship is established on sex that's what the premise of the relationship will be. I asked her if him and her ever had any sort of "real" connection or if they have ever had any deep or insightful conversations?...and pillow talk doesn't count. I asked her did she know how many siblings he had, what his religious views were, when his birthday was, and if she even knew what his major/minor was....do you know that she didn't know the answer to any of the above. I am by no means judging her because she wasn't expected to know any of these things due to the nature of relationship that they had. But she cant get mad because another female saw those things more important than just sex. In my opinion you cant expect situations like sexual arrangements, cuddy buddies, or friends with benefits to turn into something more. You cant just have a sexual relationship with a person and expect the guy or girl your dealing with to wake up one morning, roll over and look at you and think," I'm going to make her my girlfriend/boyfriend today." It rarely works that way.
And to my ladies...I cannot stress more...SLEEPING WITH A GUY WILL NOT MAKE HIM WANT TO BE WITH YOU!!!!!!!!!!! Thats for my ladies that keep repeatedly sleeping with some cat hoping that by her "givin him the bizness", it will make him wanna become official. NOT AT ALL. Because just as the guy that my friend was talking to, he will find a girl thats giving him "the bizness" on all levels...mentally and physically.
But in conclusion, KNOW YOUR PLACE, WHAT YOU WANT, WHAT YOU NEED, AND WHAT YOU CAN HANDLE!! When you get these things confused, you get hurt. If You want more than sex, then state that CLEARLY, and act accordingly. If you just enjoy having sex with no attachments, then state that CLEARLY, and act accordingly. Stay in your lane, or you will get your feeling hurt.
But That's my opinion....Let me know what you think!